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杨树是沈阳地区主要造林树种之一,各县(区)均有广泛的栽培。建国以来,沈阳地区林业事业有了很大发展,截止1983年底森林覆盖率由建国初期的1.3％增加到5.1％,尤其是近十几年来杨树发展的很快,取得了可喜的成绩,杨树人工面积255km~2,占全地区有林地面积58.9％,四旁植树2379.8万株。但是也还存在着杨树品种繁多、主栽品种不明确、盲目引进、树种结构单一等问
Poplar is one of the main afforestation species in Shenyang, and all counties (districts) have extensive cultivation. Since the founding of the People’s Republic of China, the forestry industry in Shenyang has greatly developed. By the end of 1983, the forest coverage rate increased from 1.3% in the early days of the founding of New China to 5.1%. In particular, poplar trees developed rapidly in the past decade and achieved gratifying results. Yang Tree artificial area of 255km ~ 2, accounting for the entire area of 58.9% of the forest land, 23.798 million trees planted around. However, there are still many varieties of poplar, the main cultivars are not clear, blindly introduced, the single species structure such as asking